SEC Document

If any interest payment date, maturity date or redemption date falls on a day that is not a
business day, the payment will be made on the next business day with the same force and effect as if made on the relevant interest payment date, maturity date or redemption date. Unless we default on a payment, no interest will accrue for the period
from and after the applicable interest payment date, maturity date or redemption date.

Optional Redemption

Prior to July 15, 2047 (the date that is six months prior to the maturity date of the notes), the notes will be redeemable at our option,
at any time in whole or from time to time in part, at a redemption price equal to the greater of the following amounts, plus, in each case, accrued and unpaid interest thereon to, but excluding, the redemption date:

(i) 100% of the principal amount of the notes to be redeemed; and

(ii) the sum of the present values of the Remaining Scheduled Payments.

On or after July 15, 2047 (the date that is six months prior to the maturity date of the notes), the notes will be redeemable at our
option, at any time in whole or from time to time in part, at a redemption price equal to 100% of the principal amount of the notes to be redeemed plus accrued and unpaid interest thereon to, but excluding, the redemption date.

In determining the present values of the Remaining Scheduled Payments, such payments shall be discounted to the Redemption Date on a
semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) using a discount rate equal to the Treasury Rate plus 25 basis points. The indenture will
provide that with respect to any redemption we will notify the Trustee of the redemption price promptly after the calculation and that the Trustee will not be responsible for such calculation.

Comparable Treasury Issue means the United States Treasury security selected by an Independent Investment Banker as
having an actual or interpolated maturity comparable to the remaining term of the notes to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt
securities of comparable maturity to the remaining term of such notes.

Comparable Treasury Price means
(A) the arithmetic average of the Reference Treasury Dealer Quotations for such redemption date after excluding the highest and lowest Reference Treasury Dealer Quotations, or (B) if the Quotation Agent obtains fewer than four Reference
Treasury Dealer Quotations, the arithmetic average of all Reference Treasury Dealer Quotations for such redemption date.

Independent Investment Banker means a Reference Treasury Dealer or its respective successors as may be appointed
from time to time by the Quotation Agent after consultation with the Company; provided, however, that if any of the foregoing shall cease to be a primary U.S. Government securities dealer (a primary treasury dealer), another
primary treasury dealer shall be substituted therefor by the Company.

Quotation Agent means, for purposes of
determining the redemption price, such primary treasury dealer as may be selected by the Company.

Reference Treasury
Dealer means Merrill Lynch, Pierce, Fenner & Smith Incorporated or its successors, Wells Fargo Securities, LLC or its successors and, at our option, up to three other primary U.S. Government securities dealers in New York City
(each, a primary treasury dealer), provided, however, that if any of the foregoing shall cease to be a primary treasury dealer, we will substitute therefor another primary treasury dealer.

Reference Treasury Dealer Quotations means, with respect to each Reference Treasury Dealer and any redemption date,
the arithmetic average, as determined by the Quotation Agent, of the bid and asked prices

S-19

About RPM

RPM International Inc. (NYSE: RPM) owns subsidiaries that are world leaders in coatings, sealants, building materials and related services. From homes to precious landmarks worldwide, their brands are trusted by consumers and professionals alike to protect, improve and beautify. Among its leading consumer brands are Rust-Oleum, DAP and Zinsser.